diff --git a/ofdgo_sign_ses.go b/ofdgo_sign_ses.go
index 129b3ad..ae7790f 100644
--- a/ofdgo_sign_ses.go
+++ b/ofdgo_sign_ses.go
@@ -79,6 +79,7 @@ type sesVerifyResult struct {
 	SealCert    SignatureCertInfo
 	SignCertRaw []byte
 	SealCertRaw []byte
+	SealRaw     []byte
 	Certs       [][]byte
 	SealType    string
 }
@@ -193,6 +194,7 @@ func verifySESSignature(data, signedData []byte, options *signatureVerifyOptions
 	result.SealCert = signatureCertInfo(sig.Seal.Cert)
 	result.SignCertRaw = sig.Cert
 	result.SealCertRaw = sig.Seal.Cert
+	result.SealRaw = sig.Seal.Raw
 	result.Certs = append(result.Certs, sig.Seal.CertList.Certs...)
 	result.Certs = append(result.Certs, options.SignCerts...)
 	result.SealType = sig.Seal.PicType
diff --git a/ofdgo_sign_verify.go b/ofdgo_sign_verify.go
index f84384b..5ddf060 100644
--- a/ofdgo_sign_verify.go
+++ b/ofdgo_sign_verify.go
@@ -95,6 +95,8 @@ type signatureVerifyOptions struct {
 	VerifyTime *time.Time
 }
 
+var signatureMethodReplacer = strings.NewReplacer("-", "", "_", "", " ", "")
+
 // SignatureVerifyOption 签名验证选项函数
 type SignatureVerifyOption func(*signatureVerifyOptions)
 
@@ -295,12 +297,7 @@ func (r *Reader) verifySignature(sigListPath string, sigRef Signature, options *
 			report.Error = err.Error()
 			return report
 		}
-		sig, err := parseSESSignature(signedValue)
-		if err != nil {
-			report.Error = err.Error()
-			return report
-		}
-		report.SealMatchOK = bytes.Equal(sealData, sig.Seal.Raw)
+		report.SealMatchOK = bytes.Equal(sealData, sesResult.SealRaw)
 	}
 	report.Valid = report.DigestOK && report.DataHashOK && report.SignedValueOK && report.SealOK && report.SealMatchOK && report.CertOK && report.certificatePolicyOK()
 	return report
@@ -498,15 +495,14 @@ func isECDSASignatureMethod(method string) bool {
 // 返回: string 规范化算法标识
 func signatureMethodText(method string) string {
 	method = strings.TrimSpace(method)
-	if strings.HasPrefix(strings.ToLower(method), "urn:oid:") {
+	if len(method) >= len("urn:oid:") && strings.EqualFold(method[:len("urn:oid:")], "urn:oid:") {
 		method = method[len("urn:oid:"):]
 	}
 	if idx := strings.LastIndexAny(method, "#/"); idx >= 0 && idx+1 < len(method) {
 		method = method[idx+1:]
 	}
 	method = strings.ToUpper(method)
-	method = strings.NewReplacer("-", "", "_", "", " ", "").Replace(method)
-	return method
+	return signatureMethodReplacer.Replace(method)
 }
 
 // verifyPublicKeySignature 验证公钥签名